Ultrasonic Extraction of Insecticides in Soil. II. Refinement of the Technique1

Author: JOHNSEN R. E.   STARR R. I.  

Publisher: Entomological Society of America

ISSN: 1938-291X

Source: Journal of Economic Entomology, Vol.63, Iss.1, 1970-02, pp. : 165-168

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